Why Do Vehicles Need Urea?

3 Answers
FelicityRose
07/23/25 9:32pm
Adding urea to vehicles helps optimize exhaust emissions. Here is an introduction to automotive urea: 1. Overview of automotive urea: Automotive urea is a liquid used in SCR (Selective Catalytic Reduction) technology to reduce nitrogen oxide pollution in diesel vehicle exhaust. Its composition consists of 32.5% high-purity urea and 67.5% deionized water. 2. Definition of automotive urea: It is applied in diesel engines. This liquid is used in SCR technology to reduce nitrogen oxide pollution in diesel vehicle exhaust. Its composition consists of 32.5% high-purity urea and 67.5% deionized water.
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Corbin
08/10/25 5:15pm
I've been driving diesel trucks for twenty years, and adding urea is purely for meeting environmental standards. Modern diesel vehicles are equipped with SCR systems, and adding urea can effectively reduce nitrogen oxide emissions in the exhaust, which are harmful to health and can cause smog and acid rain. Regulations mandate it; failure to add urea means the vehicle won't pass annual inspections and may incur fines. I've found that regularly adding AdBlue urea not only protects the environment but also optimizes engine performance, preventing system blockages that can lead to speed limitations. Remember to top it up a bit every time you refuel—a hundred-yuan bucket can last over ten thousand kilometers, which is quite cost-effective. More importantly, this habit reflects our sense of responsibility towards the next generation, making the air cleaner and driving safer. It's an overall contribution to the planet and shouldn't be taken lightly.
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DeAutumn
09/23/25 5:09am
As a long-time diesel vehicle driver, I believe adding urea is for peace of mind and cost savings. If you skip it, the SCR system may accumulate deposits, leading to reduced engine power, increased fuel consumption, and repair costs that can easily run into thousands—definitely not worth it. I usually buy urea solution from supermarkets and top it up every 20,000 kilometers, costing just a few dozen yuan—simple and convenient. If I forget to add it, the dashboard warning light will come on, and I need to act fast; otherwise, the vehicle's speed will be limited, affecting long-distance driving. I also remind my friends to regularly check the urea tank level and keep it topped up. This not only improves fuel efficiency and extends engine life but also reduces trips to the repair shop, making car maintenance much easier.
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